213036165 has 24 divisors (see below), whose sum is σ = 369696600. Its totient is φ = 113485824.

The previous prime is 213036157. The next prime is 213036191. The reversal of 213036165 is 561630312.

It can be written as a sum of positive squares in 4 ways, for example, as 6625476 + 206410689 = 2574^2 + 14367^2 .

It is not a de Polignac number, because 213036165 - 2³ = 213036157 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44949 + ... + 49461.

It is an arithmetic number, because the mean of its divisors is an integer number (15404025).

Almost surely, 2^213036165 is an apocalyptic number.

It is an amenable number.

213036165 is a deficient number, since it is larger than the sum of its proper divisors (156660435).

213036165 is a wasteful number, since it uses less digits than its factorization.

213036165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5573 (or 5570 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 213036165 is about 14595.7584592237. The cubic root of 213036165 is about 597.2430598711.

Adding to 213036165 its reverse (561630312), we get a palindrome (774666477).

The spelling of 213036165 in words is "two hundred thirteen million, thirty-six thousand, one hundred sixty-five".